A fast, local-first "redirection engine" for !bang users with a few extra features ^-^
dunkirk.sh
1import { bangs } from "./bang";
2
3function noSearchDefaultPageRender() {
4 const app = document.querySelector<HTMLDivElement>("#app");
5 if (!app) throw new Error("App element not found");
6 app.innerHTML = `
7 <div style="display: flex; flex-direction: column; align-items: center; justify-content: center; height: 100vh;">
8 <div class="content-container">
9 <h1>┐( ˘_˘ )┌</h1>
10 <p>DuckDuckGo's bang redirects are too slow. Add the following URL as a custom search engine to your browser. Enables <a href="https://duckduckgo.com/bang.html" target="_blank">all of DuckDuckGo's bangs.</a></p>
11 <div class="url-container">
12 <input
13 type="text"
14 class="url-input"
15 value="https://unduck.link?q=%s"
16 readonly
17 />
18 <button class="copy-button">
19 <img src="/clipboard.svg" alt="Copy" />
20 </button>
21 </div>
22 </div>
23 <footer class="footer">
24 made with ♥ by <a href="https://github.com/taciturnaxolotl" target="_blank">Kieran Klukas</a> as <a href="https://github.com/taciturnaxolotl/unduck" target="_blank">open source</a> software
25 </footer>
26 </div>
27 `;
28
29 const copyButton = app.querySelector<HTMLButtonElement>(".copy-button");
30 if (!copyButton) throw new Error("Copy button not found");
31 const copyIcon = copyButton.querySelector("img");
32 if (!copyIcon) throw new Error("Copy icon not found");
33 const urlInput = app.querySelector<HTMLInputElement>(".url-input");
34 if (!urlInput) throw new Error("URL input not found");
35
36 urlInput.value = `${window.location.protocol}//${window.location.host}?q=%s`;
37
38 copyButton.addEventListener("click", async () => {
39 await navigator.clipboard.writeText(urlInput.value);
40 copyIcon.src = "/clipboard-check.svg";
41
42 setTimeout(() => {
43 copyIcon.src = "/clipboard.svg";
44 }, 2000);
45 });
46}
47
48const LS_DEFAULT_BANG = localStorage.getItem("default-bang") ?? "g";
49const defaultBang = bangs.find((b) => b.t === LS_DEFAULT_BANG);
50
51function getBangredirectUrl() {
52 const url = new URL(window.location.href);
53 const query = url.searchParams.get("q")?.trim() ?? "";
54 if (!query) {
55 noSearchDefaultPageRender();
56 return null;
57 }
58
59 const match = query.match(/!(\S+)/i);
60
61 const bangCandidate = match?.[1]?.toLowerCase();
62 const selectedBang = bangs.find((b) => b.t === bangCandidate) ?? defaultBang;
63
64 // Remove the first bang from the query
65 const cleanQuery = query.replace(/!\S+\s*/i, "").trim();
66
67 // Format of the url is:
68 // https://www.google.com/search?q={{{s}}}
69 const searchUrl = selectedBang?.u.replace(
70 "{{{s}}}",
71 // Replace %2F with / to fix formats like "!ghr+t3dotgg/unduck"
72 encodeURIComponent(cleanQuery).replace(/%2F/g, "/"),
73 );
74 if (!searchUrl) return null;
75
76 return searchUrl;
77}
78
79function doRedirect() {
80 const searchUrl = getBangredirectUrl();
81 if (!searchUrl) return;
82 window.location.replace(searchUrl);
83}
84
85doRedirect();